Recording device for liquid pumps



2 SHEETS-SHEET l.

A. B. SNYDER.

FILED CT.20.I92I.

Mar. 13, 1923.

RECORDlNG DEVICE FOR LIQUID PUMPS;

Mar. 13, 1923.

-l-^. B. SNYDER. RECORDING DEVICE FOR LIQUID PUMPS;

2 SHEETS-SHEET 2.

FILED OCT. 2011921.

Awa/VWS@ Patented Mar. 13, 1923.

UNITED STATES ATHERTON B. SNYDER, 0F GRASSv VALLEY., CALIFORNIA.

RECORDING DEVICE FOR LIQUID PUMPS.

Application led October 20, 1921. Serial No. 508,951.

To all whom t may concern.'

Be it known that I, .-X'rHnlrroN B. SNYDER, a citizen ot' the United States, and resident of Grass Valley, county of Nevada, and State ot' California, have invented a new and useful Recording Device Jor Liquid lumps, of which the following is a specification.

The present invention relates to improvements in recording devices for liquid pumps and is designed with particular reference to gasoline dispensing pumps, such as are con'nnonly used in garages and automobile supply stations. It is well known Vthat in these establishments pumps are ordinarilyv used for the dispensing ot' gasoline and that these pumps are so constructed as to indicate on a dial the quantity ot gasoline withdrawn. These dials, however, and their working mechanism are so constructed at the present time as to require the constant attention of the party dispensing the gaso* line and as a result it frequently happens that owing to a mistake made by the operator, or his failure to properly set the hand on the dial at the proper times, sales are not recorded and a consequent loss suffered by the owner ot' the establishment.

It is the object ot' the present device 'to provide a recording mechanism in connection with these pumps that is so constructed as to eliminate all chances of error and so as to force the operator after each sale to l cause the same to be properly recorded. It

is the further object of my invention to provide an indicating device comprising a dial and a hand moving over the same that will indicate the quantity of gasoline withdrawn during each operation and that will automatically be returned to zero before a new quantity of gasoline can he withdrawn. It is a further object of my invention to utilize the supporting means for the hose commonly used in the dispensing of gasoline for actuating the recording device in such a' manner that the placing of the hose on its support causes the last sale to be recorded on 'a strip of paper and also causes the pa er to advance immediately after the record as been made so'as to become visible outside of the recording device while the removal of the hose from its support causes the recording instrument or instruments to return to their inactive or zero position.

)Vith these objects in view I have illustlated the preferred form of my invention Figures 3 and 4 show the gasoline dispensing pump (1) as commonly used in gasoline dispensing statlons. The same is actuated in a well known manner not shown 1n the drawing by means of the handle (2) My re cording device (3) enclosed in the box (4) is attached to the side of the pump as shown in Figure 3 and is provided with a vertical hook adapted to receive the hose (7) when the latter is not used. Above the box (4) is shown the dial (8) graduated as shown in Figure 4 over which the hand (9) moves to indicate the number of gallons of gasoline withdrawn during each operation. The detail construction of the recording mechanism is shown in Figures 1 and 2 from which it will be seen that the principal actuatin means for the recording device is the sha t (11) which is connected either directly or through a train of gears, not shown i-n the drawing, to the handle (2) so that whenever the handle (2) is operated the 'shaft (11) will rot-ate in a predetermined manner. The shaft (1.1) has keyed thereto a pinion (12) which engages a gear Wheel (14) loosely mounted on the shaft (16) extending parallel to the shaft (11) and supported in the walls of the box (4). The shaft 16) has also loosely mounted thereon the recording wheel (17), the rim of which is graduated, as shownl in Figure 2, and

which forms an integral part of the sleeve 100 (18) carrying the bevel gear (19) bearing against the collar (20) rigidlyv secured to the shaft (16). A spring (21) wound on the shaft (16) and extending between the Wall (22) of the box (4) and the gear Wheel (14) 105 resses 'the latter gear wheelin'to 0 contact with the recording whee (17). This contact is suicientl intense to transmit rotary motion from 't e gear wheel (14) rative to the recording wheel (.17) and the bevel 110v gear (19) but is not suicient to' transmit motion the opposite way lso that the gear wheel (14) will'turn the recording wheel (A17), but the latter will not turn the former. rThe particular object of this arrangement will appear as the description proceeds. The bevel gear (19) engages a second bevel gear (24) at the lowerr end of the vertical-- shaft (26) extending through the top of the box and ending lnto a worm (27) engaging the worm gear (28) mounted on the transverse shaft (29) which latter shaft carries the hands of the dial It will be seen that in the device thus far described a turning of the handlel (2) will cause the recording wheel (17) to rotate so as to-'bring a figure corresponding to the number of gallons of' gasoline .withdrawn into operative proximity with the printing device (31) hereinafter described and will also cause thehand (9) to move over the dial (8) vto a corresponding figure. The shaft (11) carries at its end the bevel gear (32) whichI engages a'pinion (33) at the end of a shaft (34). The latter is provided with a worm (36) engaging a worm gear (37) which latter is operatively associated with the recording device (38). The latter is used in my device to indicate the total of the gallons of gasoline withdrawn and is constructed along well known lines,` and therefore not described in detail, it being suiiicient rto state that the recording device (38) brings a gure corresponding to the total sum of gallons of gasoline withdrawn in operative proximity with the printing device (31) at the same time that the re' cording wheel (17) brings the figure indicating the quantity of gasoline vwithdrawn during the last operation into the same relation with the printing device. Thus after a quantity of gasoline has been withdrawn we find the lia-nd on the dial indicating the number of gallons withdrawn during the last operation, the Vwheel 17 bringing the same figure and the recording machine (38) the total figure opposite the printing device.

After the operator has withdrawn the desired amount of gasoline h'e-places the hose `on the hook (6), which is shown as being supported on the vertical bar (41) which extends through the box and is provided with teeth (42) and (43) at two opposing sides. The teeth (43) engage a cog wheel (44) loosely mounted on the shaft (46) and provided with a pawl (47') adapted't'o engage a cam (48) rigidly secured to the shaft (46), the spring (49) holding the pawl in Contact with the cam. It will be noticed from Figure 1 that 'when the bar (41) is in its uppermost position, that is, in theV position it occupies before the hose is placed on.

the same, the pawl (47) is'out of engagement with the cam (48.) and that the cog wheel (44) has to rotate through about onefourth of a turn before the pawl engages the cam. The shaft (46) carries the drum (51) with which is operativelyv associated a second drum (52) idling on the shaft (53) so that the `strip of paper (54) emanating from the roll (56) may be received between the two drums and advance when *be drums rot-ate. The bar (41) is also provided with a dog (5 7) pivoting on the pin (58), the position of the dog being defined by the stop (.59) and the spring (61) forcing the extreme end of the dog against the stop. (ln the downward travel of the bar (41) the point (62) of the dog (57) engages the point (63) of the printer (31) which comprises al lever (64) pivoting on the shaft (66) and carrying a transverse printing hammerl (67) disposed in operativere-lation to the single recording wheel (17') as well as the total recording machine (38). The other arm (68) of the lever (64) is connected by the spring (69) to a stationary support (71). `W hen the hose is placed on the hook (6) it forces the 'bar (41) downwardly, theteeth (43) engaging and rotating the cog wheel (44) while the dog (57) enga-ges the printing lever (64). It will be remembered that the cog wheel (44) is inoperative during the first quarter of its turn so that the dog (57) can force the printing lever (64) downward against the resistance of the spring (69) until through the changed position of the lever (64) the dog loses its hold on the lever and the latter is violently thrown against the two recording wheels (17) and (38) and the 100 strip of paper (54) interposed between the recording wheels and the printing lever so that the figures on the wheels' indicating the record to be made are printedon the paper. l/Vhen this is done the pawl (47) engagesthe 105 cam (48) so that the cog wheel (44) begins to rot-atethe shaft (46) and with it the drum (51), which through` i-ts (fo-operation with the drum (52) pulls the paper forward and pushes the record previously made 110 through the slot (72) in the side ofthe box where the same may be manually separated from the .strip (54). It will be seen that this last operation has not changed the position of the recordingwheels nor that of 115 the hand on the dial so that the latter still indicates the amount of gasoline withdrawn during the last operation. 4This situation is not changed until the hose is removed from the hook when the spring (76) secured be# 120 tween the bar ('41) and the top (77) ofthe box (4) pulls the bar upward to its original position.

The teeth (42) of the bar engage the cog wheel (78) rigidly secured on the shaft 125 (16). It will be remembered that the recording Wheel (17) is mounted loosely on the shaft (16) 'so that normally the rotation` of the shaft (16) does not affect the recording wheel (1 7).A On the downward motion 13o of the bar (41) therefore, although the shaft (16) was rotated by the cog wheel (78), the recording WheelA (17 remained in its position; but on the upward motion of the "bar (41) the rotation of the cg wheel (78) and the shaft (16) is transmitted to the recording wheel (17) by means of the pawl (79) ivotally secured on the side of the recordlng wheel (17) engaging a co-operating recess (81) in the shaft (16), the spring (82) forcing the pawl into engagement with the recess. In this manner the recording wheel y17) which was advanced from zero to a gure corresponding to the uantity of gasoline Withdrawn during the (last operation is now further advanced so as to go back to zero. As has been previously remarked, the recording Wheel (17) is connected with the gear Wheel (14) in such a manner as to allow of rotary motion of the recording wheel independently of the gear wheel (14). The advance of t-he recording wheel (17) to zero is transmitted to the hand o n the dial by means of the bevel gears (19) and (24), the shaft (26), the worm (27) and the gear (28) So that when the hose is lifted off the hook (6) the recording wheel (17) as well as the hand (9) on the dial are advanced to zero, while the total recording machine (38) remains unaffected.

Briefl stated, the apparatus works as follows: pon turning the handle (2) which actuates the pumping mechanism the shaft (11) is actuated to rotate and to turn the gear Wheel (14) and through it the recordmg wheel (17 Assuming that the shaft (11) is turned counter-clockwise lookingat it from the right side in Figure 2, the recording wheel (17) is turned clockwise and a certain figure, say 5, is brought opposite the printing device. Simultaneously the hand on the dial has been moved to indicate the figure 5 on the latter through'the gear train described hereinabove, While simultaneously the figure 5 has been added to the total ligure indicated on the total recording device (38). Hanging the hose on the hook (6) causes the bar (41) to slide downwardly to actuate theprinting lever (31) by means of the dog (57) and to pull the strip of paper (54) forward so as to expose the printed record outside of the box for manual removal. During this operation the shaft (16) has been rotated in counterclockwise direction Without affecting the recording Wheel (17 since the recess (81) in the shaft (16) does not engage' the pawl (79) on a counter-clockwise rotation. The next operation is the removal of the hose from the hook (6) which causes the bar (41) to slide upwardly thereby rotating the shaft (16) in a clockwise direction. 0n

this motion the shaft engages the pawl (79) as soon as the recess (81) reaches the point ofthe pawlland then turns the recording wheel (17) into its original position, by y in exactly the same manner as the recordf ing wheel. It will be noted that due to the construction of the dial the hand cannot be turned in either direction manually since the worm gear is employed for its operation. Thus whenever the hand on the dial indicates any other `igure than zero there is only one way of returning it to zero and that is by placing the hose on the hook- (6) and removing it again. As we have seen, the placing of the hose on the hook (6) causes the record to be printed on the strip of paper so that when the hand on the dial indicates any figure except zero it cannot be returned to zero except after the record has been properly printed on the strip of paper. It will be readily understood that instead of one strip of paper two strips may be introduced so as to provide an extra copy for the customer.

I claim:

1. A recording device for 'a liquid dis# pensing'machine having'a dispensing hose, comprising a recording wheel, means actuated by the dispensing mechanism for disposing the wheel in 'an active position, means for supporting the hose when not used adapted to print the record upon being engaged by the hose and to advance the recording wheel to an initial position when disengaged from the hose.

2. A recording device for a liquid dispensing machine having a dispensing hose, comprising a recording wheel and an indicating dial, means actuated by t-he dispensing mechanism for .disposing the wheel and the dial hand in an active position, means for supporting the hose when not used adapted to print the record upon being engaged by the hose and to advance the recording wheel and the dial hand to an initial posit-ion when disengaged from the hose.

3. A recording device for a liquid dispensing machine having a dispensing hose, comprising a single recording wheel and a set of total recording wheels, means actuated by the dispensing mechanism for dis posing the recording wheels inran active position, means for supportingthe hose when not used adapted to print the records upon being engaged by the hose and to advance the single recording Wheel to an initial position When disengaged from the hose.

4. A .recording device for a liquid disein pensing .machine having aidispensing hose, comprising a single recording Wheel, a set of total recording Wheelsv and an indicating` diaLlmeans actuated by the dispensing mechanism for disposing the recording wheels and the dial hanoniin anactive position, meansfor supportmg the hose When noi*l used adapted to print the records upon bemg engaged by the hose and to advance `the single recording 'Wheel and the diailo hand to an initial position when disengaged from the hose.

ATHERTON B. SNYDER. 

